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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 3 |
| 7 | 10 |
| 8 | 26 |
| 9 | 63 |
| 10 | 145 |
| 11 | 332 |
| 12 | 760 |
| 13 | 1745 |
| 14 | 4007 |
| 15 | 9198 |
| 16 | 21102 |
| 17 | 48403 |
| 18 | 111021 |
| 19 | 254656 |
| 20 | 584132 |
| 21 | 1339893 |
| 22 | 3073459 |
| 23 | 7049906 |
| 24 | 16171066 |
| 25 | 37093175 |
| 26 | 85084313 |
| 27 | 195166404 |
| 28 | 447672720 |
| 29 | 1026871705 |
| 30 | 2355438303 |
| 31 | 5402904310 |
| 32 | 12393181766 |
| 33 | 28427480091 |
| 34 | 65206953349 |
| 35 | 149571708488 |
[1,3,10,26,63,145,332,760,1745,4007,9198,21102, 48403,111021,254656,584132,1339893,3073459, 7049906,16171066,37093175,85084313,195166404, 447672720,1026871705,2355438303,5402904310, 12393181766,28427480091,65206953349,149571708488] |